Material distributing device suitable for fiberboard vacuum paving system

Abstract

The utility model discloses a material distributing device suitable for a fiberboard vacuum paving system. The material distributing device comprises a paving negative pressure device, a negative pressure baffle, a negative pressure air pipe, a material box and a controller. The vacuum paving negative pressure device is used for forming pulse type negative pressure in the paving transverse direction; a plurality of round holes are formed in the side part of the material distributing head; the negative pressure baffle plate comprises a fixed baffle plate and a movable baffle plate; the fixed baffle is fixedly installed on the round hole, the movable baffle and the fixed baffle share the same circle center, and the movable baffle moves around the circle center through a driving device; the movable baffles at the two ends and the fixed baffle can cover the whole round hole, and the movable baffle and the fixed baffle in the middle cannot form a round shape. According to the utility model, the problems of total fiber quantity fluctuation and non-uniform transverse fiber quantity of the vacuum paving system can be solved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of material distribution of a fiberboard vacuum paving system, in particular to a material distribution device suitable for a fiberboard vacuum paving system. Technical Background

[0002] At present, the fiberboard vacuum paving system mainly uses a swinging chute to control material distribution. When the swinging chute swings left and right, it can control the pause time. The longer the pause time, the more fiber at this point. There is a negative pressure air duct under the swinging chute, and the fiber is adsorbed by negative pressure to form a paving effect.

[0003] However, due to the action of gravity, the fiber amount at the left and right ends of the swinging chute is prone to be small, and this situation is more obvious when the total fiber amount is larger. Moreover, the total fiber amount of the vacuum paving system fluctuates, and there is an easy situation where the total fiber amount increases instantaneously during vacuum paving. This situation is prone to cause material blockage and shutdown, and the existing design cannot solve it. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a material distribution device suitable for a fiberboard vacuum paving system to solve the problems raised in the above background technology, and can solve the problems of total fiber amount fluctuation and uneven transverse fiber amount of the vacuum paving system at the same time.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A material distribution device suitable for a fiberboard vacuum paving system is installed in a paving box, and a material distribution head is provided on the paving box; a swinging chute and a conveyor belt are provided in the paving box; the conveyor belt is arranged at the bottom of the paving box; the swinging chute is arranged on the conveyor belt; the material distribution device includes: a vacuum paving negative pressure device, a negative pressure baffle, a negative pressure air duct, a material box and a controller; the vacuum paving negative pressure device is arranged in the paving box and installed at a position below the swinging chute for forming a pulsed negative pressure in the transverse direction of paving; several round holes are provided on the side of the material distribution head; the number of the negative pressure baffle and the negative pressure air duct is the same as that of the round holes; each round hole is connected to a material box behind; the negative pressure baffle includes a fixed baffle and a movable baffle; the fixed baffle is fixedly installed on the round hole, the movable baffle is concentric with the fixed baffle and moves around the center through a driving device; the movable baffles at both ends can cover the entire round hole with the fixed baffle, and the movable baffle and the fixed baffle in the middle cannot form a circle; all the negative pressure air ducts are divided into multiple sections, one section is connected to the vacuum paving negative pressure device, one section is connected to the material box, and one section is used to send the fiber in the material box to the fiber bin for re-paving; the driving device and the vacuum paving negative pressure device are electrically connected to the controller.

[0007] Further, the number of the round holes and the negative pressure baffle is 8.

[0008] Further, the vacuum paving negative pressure device includes a negative pressure fan, an air collecting hood, and air holes. The air holes are provided at the bottom of the swing groove, the air collecting hood is arranged below the air holes, the bottom of the air collecting hood is communicated with a negative pressure air duct, and the negative pressure air duct is connected to the negative pressure fan; multiple air collecting hoods are arranged below the conveyor belt, and the air ducts at the bottoms of the multiple air collecting hoods are aggregated and then connected to the negative pressure fan.

[0009] Further, the controller uses a PLC single-chip microcomputer.

[0010] Further, the driving device uses a stepping motor.

[0011] Further, the fixed baffle is a semi-circular baffle; the movable baffles at both ends are semi-circular baffles, and the middle movable baffle uses a sector baffle with a smaller arc than the fixed baffle.

[0012] Further, the negative pressure air duct is connected to a recovery mixing chamber, and after passing through the recovery mixing chamber, the fibers in the material box are sent to the fiber bin for re-paving.

[0013] The working principle of the present utility model is as follows:

[0014] When the movable baffle and the fixed baffle form a circle, the hole, i.e., the air suction port, is completely blocked, and there is no negative pressure in this distributor head, and the fibers fall normally; when the movable baffle rotates to other positions, the negative pressure changes according to the blocking situation. The movable baffle and the fixed baffle in the middle position cannot form a circular shape, so there is always negative pressure, and the negative pressure changes according to the blocking change. The structure of the movable baffle makes the situation with negative pressure increase from the middle to both sides, and more fibers are sucked away from the middle than from both sides, balancing the problem that the fiber quantity on both sides of the swing groove is inherently small. By controlling the rotation speed of the movable baffle, the lateral density distribution can be accurately adjusted. At the same time, since the baffles on both sides can completely block the negative pressure, the pulsed negative pressure generated by the vacuum paving negative pressure device can avoid blockage when the fiber quantity is large, because blockage basically occurs on both sides, and it is very difficult for the middle part to be blocked.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] This patent controls the negative pressure magnitude by controlling the rotation speed of the movable baffle through the controller, achieving secondary improvement in the lateral fiber distribution, and the pulsed negative pressure generated by the vacuum paving negative pressure device can avoid fiber accumulation and improve reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly explain the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. These drawings only represent some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0018] Figure 1 This is the overall structure diagram of the embodiment of the present utility model.

[0019] Figure 2 This is the front view of the embodiment of the present utility model.

[0020] Figure 3 This is the structure diagram of the fixed baffle of the embodiment of the present utility model.

[0021] Figure 4 This is the structure diagram of the movable baffle of the embodiment of the present utility model.

[0022] Markings in the figure: 0 - paving box; 1 - fixed baffle; 2 - movable baffle; 3 - material distributing head; 4 - stepping motor; 5 - vacuum paving negative pressure device; 6 - recycling mixing chamber; 7 - negative pressure air duct; 8 - sweeping roller recycling fiber inlet; 9. conveyor belt. Specific embodiments

[0023] Combined with the accompanying drawings in the embodiments of the present utility model, the technical solutions are clearly and completely described. The described embodiments are only part of the embodiments of the present utility model, rather than all of them. According to these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] In order to more clearly illustrate that the purpose, features and advantages of the present utility model can be more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The following specific examples illustrate the disclosed embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the content disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of them. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0026] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] It should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0028] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] As Figure 1 As shown, the embodiment of the present utility model provides a material distributing device applicable to a fiberboard vacuum paving system, which is installed in the paving box 0. A material distributing head 3 is provided on the paving box 0; a swinging groove and a conveyor belt 9 are provided in the paving box 0; the conveyor belt 9 is provided at the bottom inside the paving box 0; the swinging groove is provided on the conveyor belt 9; a fiber inlet 8 for sweeping and recovering fibers is provided on the material distributing head 3. It further includes: a vacuum paving negative pressure device 5, a negative pressure baffle, a negative pressure air duct 7, a material box and a controller; the vacuum paving negative pressure device 5 is provided inside the paving box 0 and installed at a position below the swinging groove for forming a pulsed negative pressure in the transverse direction of paving; several round holes are provided on the side of the material distributing head 3; the number of the negative pressure baffle and the negative pressure air duct 7 is the same as that of the round holes; each round hole is connected to a material box behind; the negative pressure baffle includes a fixed baffle 1 and a movable baffle 2; the fixed baffle 1 is fixedly installed on the round hole, the movable baffle 2 has the same center as the fixed baffle 1, moves around the center through a driving device, and can cover the entire round hole together with the fixed baffle 1; all the negative pressure air ducts 7 are divided into multiple sections, one section is connected to the vacuum paving negative pressure device 5, one section is connected to the material box, and one section is used to send the fibers in the material box to the fiber bin for re-paving; the driving device and the vacuum paving negative pressure device 5 are electrically connected to the controller. The controller uses a PLC single-chip microcomputer. The driving device uses a stepping motor 4.

[0030] The number of the round holes and the negative pressure baffle is 8.

[0031] The vacuum paving negative pressure device 5 includes a negative pressure fan, an air collecting hood, and air holes. The air holes are arranged at the bottom of the swinging groove, the air collecting hood is arranged below the air holes, the bottom of the air collecting hood is connected to the negative pressure air duct 7, and the negative pressure air duct 7 is connected to the negative pressure fan. The air collecting hood is arranged at multiple places below the conveyor belt 9, and the air ducts at the bottoms of multiple air collecting hoods are aggregated and then connected to the negative pressure fan.

[0032] The fixed baffle 1 is a semi-circular baffle; the movable baffles 2 at both ends are semi-circular baffles, and the middle movable baffle 2 is a sector baffle with a radian smaller than that of the fixed baffle 1. The middle movable baffle 2 and the fixed baffle 1 cannot form a circular shape, so there is always negative pressure, and the negative pressure changes according to the change of occlusion. The structure of the movable baffle 2 makes the condition of having negative pressure increase from the middle to both sides, and more fibers are sucked away from the middle than from both sides, balancing the problem that the amount of fibers on both sides of the swing groove is inherently small. By controlling the rotation speed of the movable baffle 2, the distribution of the transverse density can be accurately adjusted. At the same time, since the baffles on both sides can completely block the negative pressure, the pulsed negative pressure generated by the vacuum paving negative pressure device 5 can avoid the blockage when the amount of fibers is large, because the blockage basically occurs on both sides and it is difficult to block in the middle.

[0033] The negative pressure air duct 7 is connected to the recovery mixing chamber 6, and the fibers in the material box are sent to the fiber bin for re-paving after passing through the recovery mixing chamber 6.

[0034] The above has introduced in detail a material distribution device applicable to a fiberboard vacuum paving system provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those skilled in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A material distribution device suitable for a fiberboard vacuum paving system, installed in a paving box, the paving box is provided with a material distribution head; the paving box is provided with a swing trough and a conveyor belt; The conveyor belt is arranged at the bottom of the paving box; the swing groove is arranged on the conveyor belt; it is characterized in that: include: Vacuum paving negative pressure device, negative pressure baffle, negative pressure air duct, material box and controller; the vacuum paving negative pressure device is arranged in the paving box, installed below the swing groove, and is used to form pulsed negative pressure in the transverse direction of the paving; a plurality of circular holes are arranged on the side of the material dividing head; the number of the negative pressure baffle and the negative pressure air duct is the same as the circular holes; a material box is connected behind each circular hole; the negative pressure baffle includes a fixed baffle and a movable baffle; the fixed baffle is fixedly installed on the circular hole, and the movable baffle has the same center as the fixed baffle, moves around the center through the driving device, and can cover the entire circular hole with the fixed baffle; all negative pressure air ducts are divided into multiple sections, one section is connected to the vacuum paving negative pressure device, one section is connected to the material box, and one section is used to send the fibers in the material box to the fiber bin for re-paving; the driving device and the vacuum paving negative pressure device are electrically connected to the controller.

2. A material distribution device suitable for a fiberboard vacuum paving system according to claim 1, characterized in that: The number of the circular holes and negative pressure baffles is 8.

3. The material distribution device suitable for a fiberboard vacuum paving system according to claim 1, characterized in that: The vacuum paving negative pressure device includes a negative pressure fan, an air collecting hood, and an air hole. The air hole is arranged at the bottom of the swing groove, the air collecting hood is arranged below the air hole, the bottom of the air collecting hood is connected to the negative pressure air duct, and the negative pressure air duct is connected to the negative pressure fan; the air collecting hood is arranged at multiple locations below the conveyor belt, and the air ducts at the bottom of multiple air collecting hoods are connected to the negative pressure fan after being aggregated.

4. The material distribution device suitable for a fiberboard vacuum paving system according to claim 1, characterized in that: The controller adopts a PLC single chip microcomputer.

5. The material distribution device suitable for a fiberboard vacuum paving system according to claim 1, characterized in that: The driving device adopts a stepping motor.

6. The material distribution device suitable for a fiberboard vacuum paving system according to claim 1, characterized in that: The fixed baffle is a semicircular baffle; the movable baffles at both ends are semicircular baffles, and the middle movable baffle is a fan-shaped baffle with a smaller curvature than the fixed baffle.

7. The material distribution device suitable for a fiberboard vacuum paving system according to claim 1, characterized in that: The negative pressure air duct is connected with a recovery mixing chamber, and the fibers in the material box are sent to the fiber bin for re-laying after passing through the recovery mixing chamber.

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